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White powder film developer in three vacuum-sealed sachets

Adox

Adox Atomal ATM 49 Film Developer (1L)

SKU CH-FC5T-DGNA7

Makes 1 litre of ultra-fine grain B/W developer that pushes films up to two stops and processes up to 20 rolls

  • Makes 1L stock solution from three powder bags
  • Push-process films up to 2 stops with longer development
  • Ultra-fine grain for high-speed films up to 1600 ASA
  • Processes hard-working films like ADOX ORTHO 25
  • Dilute 1+1 or 1+2 for one-shot use up to 20 films

Adox Atomal ATM 49 Developer

Adox Atomal ATM 49 is a universal ultra-fine grain black-and-white film developer supplied as three powder bags to make one litre of stock solution. It is designed for photographers who process their own films and want a single chemistry that handles every film type with consistent results. The powder format keeps the concentrate stable until mixing, giving fresh chemistry for each session.

Suited for push processing and all film types

This developer suits darkroom users who regularly push films, need smooth tonal transitions for portraits or landscapes, or process harder-working emulsions such as Adox Ortho 25. It is not for photographers who require a high-acutance formula for maximum edge sharpness, nor for those who prefer a ready-to-use liquid concentrate that avoids mixing steps.

One litre stock processes up to 20 films

A single one-litre stock solution can be diluted 1+1 or 1+2 for one-shot use and will process up to 20 rolls depending on the dilution chosen. This yield figure is the key metric for estimating how many developing sessions the package will cover before a new pack is needed.

Highlights

  • Makes 1L stock solution from three powder bags
  • Push-process films up to 2 stops with longer development
  • Ultra-fine grain for high-speed films up to 1600 ASA
  • Processes hard-working films like ADOX ORTHO 25
  • Dilute 1+1 or 1+2 for one-shot use up to 20 films

Specifications

No published specifications for this item yet.

Questions about this item

How much heat does the ATM 49 developer generate during extended push-processing sessions?

As a powder-based chemical concentrate mixed into 33.8 oz of stock solution, it produces no heat during storage or standard developing workflows.

What additional equipment is required to mix and use the three vacuum-sealed powder bags?

You need a clean 1 L container, accurate scale, thermometer, stirring rod, graduated cylinders for 1+1 or 1+2 dilutions, and a light-tight developing tank with reels.

Can the ATM 49 developer be used with older orthochromatic films like ADOX ORTHO 25?

Yes, its superior equalizing capacity processes hard-working films like ADOX ORTHO 25 to produce negatives printable on grade 2 paper.

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